Discovery of the nearby long, soft GRB 100316D with an associated supernova

Details Discovery of the nearby long, soft GRB 100316D with an associated supernova Discovery of the nearby long, soft GRB 100316D with an associated supernova

2010-04-16

arxiv.org/abs/1004.2919v3

Mon. Not. Roy. Astron. Soc. 411 (2011) 2792-2803

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

13 pages, 8 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2010.17879.x

We report the Swift discovery of nearby long, soft gamma-ray burst GRB 100316D, and the subsequent unveiling of its low redshift host galaxy and associated supernova. We derive the redshift of the event to be z = 0.0591 +/- 0.0001 and provide accurate astrometry for the GRB-SN. We study the extremely unusual prompt emission with time-resolved gamma-ray to X-ray spectroscopy, and find that the spectrum is best modelled with a thermal component in addition to a synchrotron emission component with a low peak energy. The X-ray light curve has a remarkably shallow decay out to at least 800 s. The host is a bright, blue galaxy with a highly disturbed morphology and we use Gemini South, VLT and HST observations to measure some of the basic host galaxy properties. We compare and contrast the X-ray emission and host galaxy of GRB 100316D to a subsample of GRB-SNe. GRB 100316D is unlike the majority of GRB-SNe in its X-ray evolution, but resembles rather GRB 060218, and we find that these two events have remarkably similar high energy prompt emission properties. Comparison of the host galaxies of GRB-SNe demonstrates, however, that there is a great diversity in the environments in which GRB-SNe can be found. GRB 100316D is an important addition to the currently sparse sample of spectroscopically confirmed GRB-SNe, from which a better understanding of long GRB progenitors and the GRB--SN connection can be gleaned.

Affiliated with

Also associated with

No associations

Rating

Discovery of the nearby long, soft GRB 100316D with an associated supernova does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Discovery of the nearby long, soft GRB 100316D with an associated supernova, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of the nearby long, soft GRB 100316D with an associated supernova will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-69307